Trail Running calendar near Angwin 2026-2027

Trail races at Rodeo Beach in the Marin Headlands offering 8K, half marathon, 30K and 50K on coastal singletrack and fire roads; chip timed, cupless, capacity 350.

A long running 50K and half marathon around Lake Chabot Marina and East Bay parks each August, with community staffed aid stations, downloadable course guides, and post race plant based food.

Run among towering redwoods in Oakland on August 15 at the Redwood Summer Trail Run, with distances from a 5 mile to an epic 50K plus a free kids dash. Expect stocked aid stations, finish medals and classic trail vibes.

A single loop 50K ultramarathon in Muir Beach, California on Saturday, August 15, 2026. The course uses notable Marin trails, includes about 6500 feet of elevation gain, and features coastal and Bay Area views.

Join the new Mammoth Bar Trail Runs on Sept 6, 2026 in Auburn CA with Half Marathon and 10K on single track and double track trails. Expect steep climbs, thrilling descents and sweeping views of the American River Canyon.

Diablo Trail Run on September 6, 2026 in Clayton CA offers distances from a 4 mile Mitchell Canyon course to a 50K, plus a free kids 50 yard dash for age six and younger. Courses use dirt roads and single track with aid stations every 3 to..

Trail races on September 12, 2026 in Tilden Regional Park and Wildcat Canyon offering 50K, 35K, half marathon and 10K courses with marked trails, aid stations every five to seven miles, and a cupless format requiring reusable cups or bottle..

Trail runs at Granite Beach, Folsom Lake SRA offering a 10 mile course and a 5K on shoreline and single-track trails, with aid stations, a finisher beer glass, and a postrace hot meal.

A multi distance trail event at Lake Chabot Regional Park in Castro Valley featuring a 100k, a 50 mile, and a marathon. All races are UTMB Index events and the 50 mile is part of the Pacific USATF Grand Prix.

Trail running event in Auburn, California on October 3, 2026 offering half marathon, 12K and 5K distances. The half course follows the Western States Trail and crosses No Hands Bridge, with start and finish at Overlook Park.

Trail races in Auburn, California in October 2026 run along the American River Canyon with 50K, half marathon, and 5 mile options. Postrace items include a commemorative cider glass, a Ponderosa Cider pour for those 21 plus, and age group a..

Run the 39th Ruth Anderson Memorial Endurance Run on October 10, 2026 in San Francisco. Choose 100 km, 50 miles, or 50 km on a scenic paved loop around Lake Merced with chip timing and certified 50K and 50 mile courses.

Run through oak forests, granite boulders and fall foliage along scenic trails by Folsom Lake at Granite Head Trails and Ales. Pick 6.6 or 11.45 mile courses and celebrate with a finisher medal, tech shirt, beer and fajitas.

A multi-distance trail running festival in Healdsburg during harvest, combining the Lake Sonoma 50 with a new 100 mile race, a trail marathon, and relay options on nearby trails.

A trail fundraiser in Joaquin Miller Park offering a 5 km trail race and a 1 mile fun run/walk to support Oakland Tech PTSA and the school cross country program; donations are tax-deductible.

Two trail endurance races start from Beal's Point near Folsom Lake, offering a **100 mile** route and a **50K** course with marked trails, aid stations, B tag timing and finisher awards.

A multi-distance trail race at Lake Chabot Regional Park on November 7, 2026, featuring 8K to 50K options and a free kids' 50 yard dash; marked loops, fully stocked aid stations every 4-5 miles, and cupless support.

A multi-distance trail event at Quarry Lakes Regional Recreation Area in Fremont featuring 5K, 10K, youth races, and a USATF-certified half marathon along Alameda Creek Trail with crushed-rock surfaces, cupless aid stations, and awards for..

Join the festive Krampus Cross Country in San Francisco with live and virtual options Dec 4 to 7 and the in person race on Dec 6. Pick 5K, 10K or the Naughty Nine Miler and take home a woodallion, tee and beer sampler stein.

The Hunter S. Thompson Fear & Loathing will take place in San Francisco on Sunday 6 December 2026. You can run between 50 and 50 miles.